Event: Derby & District Division 2

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Opponent Rating Result
Talakalukoppa Amarnath 1588 ½ - ½
Anushka M. Ramawickrama 1716 0 - 1
Nigel D Marshall 1429 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1578 = (4733 + 400 * (1 - 1)) / 3)

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